Make crate vendor available am: 8d4e6d5566

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/getrandom/+/2168682

Change-Id: I7afc18124f4f1cf391c406b87d01a29f434214bc
Signed-off-by: Automerger Merge Worker <[email protected]>